| Nomination for Nobel Prize in Physiology or Medicine | 
| Year: | 1909 | 
| Number: | 81 - 0 | 
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| Nominee 1: 
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| Name: | Jacques  Loeb | 
| Gender: | M | 
| Year, Birth: | 1859 | 
| Year, Death: | 1924 | 
| Profession: | prof physiology | 
| University: | University of California | 
| City: | Berkeley | 
| State: | CA | 
| Country: | UNITED STATES (US) | 
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| Nominee 2: 
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| Name: | Emile P Roux | 
| Gender: | M | 
| Year, Birth: | 1853 | 
| Year, Death: | 1933 | 
| Profession: | director | 
| University: | Pasteur Institute (Institut Pasteur) | 
| City: | Paris | 
| Country: | FRANCE (FR) | 
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| Motivation: | Loeb: Work on tropism, the antagonistic effect of certain metal ions and experimental parthenogenesis.
Roux: The discovery of the diphtheria toxin, work on syphilis and cerebral tetanus. | 
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| Nominator: 
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| Name: | Félix  Mesnil | 
| Gender: | M | 
| University: | Pasteur Institute (Institut Pasteur) | 
| City: | Paris | 
| Country: | FRANCE (FR) | 
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